<template>
  <view class="goods-list">
    <view v-for="(goods,i) in goodsList" :key="i" @click="gotoDetail(goods)">
      <my-goods :goods="goods"> </my-goods>
    </view>

  </view>
</template>

<script>
export default {
  data () {
    return {
      // 请求参数对象
      queryObj: {
        query: '',
        cid: '',
        pagenum: 1,
        pagesize: 10
      },
      goodsList: [],
      total: 0,

    };
  },

  onLoad (options) {
    // console.log(options)
    this.queryObj.query = options.query || ''
    this.queryObj.cid = options.cid || ''
    // console.log(this.queryObj);
    this.getGoodsList()
  },
  methods: {
    // 获取商品列表数据的方法
    async getGoodsList (cb) {
      // 打开节流阀
      this.isloading = true
      // 发起请求
      const { data: res } = await uni.$http.get('/goods/search', this.queryObj)
      // 关闭节流阀
      this.isloading = false

      // 只要数据请求完毕，就立即按需调用 cb 回调函数
      cb && cb()
      if (res.meta.status !== 200) return uni.$showMsg()
      // console.log(res)
      // 为数据赋值：通过展开运算符的形式，进行新旧数据的拼接
      this.goodsList = [...this.goodsList, ...res.message.goods]
      this.total = res.message.total
    },
    gotoDetail (goods) {

      uni.navigateTo({
        url: '/subpkg/good_detaill/good_detaill?goods_id=' + goods.goods_id
      })
    }
  },

  // 下拉刷新的事件
  onPullDownRefresh () {
    // 1. 重置关键数据
    this.queryObj.pagenum = 1
    this.total = 0
    this.isloading = false
    this.goodsList = []
    // 2. 重新发起请求
    this.getGoodsList(() => uni.stopPullDownRefresh())
  },

  onReachBottom () {
    // 判断是否还有下一页数据
    if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')

    // 判断是否正在请求其它数据，如果是，则不发起额外的请求
    if (this.isloading) return

    // 让页码值自增 +1
    this.queryObj.pagenum += 1
    // 重新获取列表数据
    this.getGoodsList()
  }
};
</script>

<style lang="scss">

</style>
